calipers i think are the same as you have. havent got a good pic but the one on the left is the standard 380 front caliper and disc
http://img576.imageshack.us/img576/9291/18122010126.jpg
I think the suspension setup is the same also, however i do remember that was one of the things MMAL harped on about when they said they had 'australianised' it. think the changes were just stiffer shocks/springs.
hard to tell for sure never having seen a galant